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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






2. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






3. 16-20 hours






4. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders






5. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






6. Prevent the cow from getting an infection from the calve






7. ~60 days before calving






8. 336 days






9. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






10. 1. bring in new genes - 2. replace males with leg problems (difficulty breeding) Note: culling has a much greater emphasis in the dairy industry vs the beef industry.






11. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






12. 1. brain function - 2. blood flow - 3. willing female






13. 19-23 (21) days






14. 1-3 days






15. Check feet and legs - look for masculine traits in build such as crest and muscling






16. 147 days






17. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.






18. Parturition is controlled by...






19. 283 days






20. Head - neck - mid-piece - tail. genetic material - has an enzyme covering that allows it to penetrate the egg






21. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






22. Allows extension of penis without fibro-elastic penis






23. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






24. Luteolysis happens because of the ____________ hormone






25. 26 hours after estrus begins






26. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






27. Animals which have only one estrous cycle (ex: dog - fox)






28. Male on one pin and female on other side






29. Sperm is produced here






30. So when offspring are born - there is more food to be found for energy stores and fat deposits IN THE SPRING






31. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






32. ~305 days (altough often longer due to breeding difficulties)






33. (FSH) causes egg to mature in females






34. 30-38 hours after estrus cycle begins






35. 19-23 (21) days






36. Reproduction. more offspring leads to more feed costs - but is offset by reproduction numbers






37. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






38. Failure to have one testis (gonad) to descend






39. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






40. 16-20 hours






41. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






42. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






43. When are dairy cattle dehorned?






44. S-shaped inside body - relaxes to be exposed for breeding. Disadvantges: muscles weaken with age - cannot always hold it in - exposed to harsh outside conditions or stepped on.

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45. 45-60 days after breeding; re-breed as required






46. Scar tissue plugs up chambers of udder






47. Help to signal hormone levels which we need both in the brain right next to each other.






48. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






49. 45-60 days after breeding; re-breed as required






50. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.







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